After the Pax Domini, we added similar words to what the Roman Catholics will begin saying in Advent 2011. I say: "Jesus is the Lamb of God who takes away the sins of the world. Blessed (Happy seems kind of, well, light here) are those who are called to His Supper." And the people respond: "Lord, I am not worthy to receive You, but only say the word, and I shall be made whole (may still switch to healed).
We have used a seasonal sentence here before (Easter: Christ our passover has been sacrificed for us...) so it is not brand new to the people. I had a lot of people stop at that point and speak much more deliberately these words. I will try it for a while. I never did like the response: "And also with you." It was the wrong response at that point. But I also feel that to end simply with the "Amen" is also a little quick and abrupt end. So we will take a look at this and it may just encourage some pre-reception prayers along that line... Who knows?!